Effects of Boost Pressure and Spark Timing on Performance and Exhaust Emissions in a Heavy-Duty Spark-Ignited Wood-Gas Engine

AbstractWood gas represents a viable energy source, particularly for stationary electric power generation, as it allows for a wide flexibility in fossil fuel sources and can be used as full supplement fuel in conventional heavy-duty (HD), turbocharged (T/C), spark-ignited (SI) engines. For such engines fuelled with wood gas, spark timing and boost pressure are critical parameters that affect both engine performance characteristics and NO and CO emissions. Thus, the main objective of this study is to investigate theoretically the effects of these parameters on the performance and exhaust emissions (NO and CO) of such an existing engine fueled with wood gas. The investigation is conducted by using a comprehensive two-zone phenomenological model. The predictive ability of model was tested against experimental measurements, which were obtained from the operation of such an engine fueled with wood-gas fuel under various operating conditions. The experimental results were found to be in good agreement with the ...